diff --git a/tests/performance/polymorphic_parts_l.xml b/tests/performance/polymorphic_parts_l.xml
index bd3f9cd8e42..4ffffe0e539 100644
--- a/tests/performance/polymorphic_parts_l.xml
+++ b/tests/performance/polymorphic_parts_l.xml
@@ -15,7 +15,7 @@
     </create_query>
     <create_query>
        CREATE TABLE hits_buffer AS hits_10m_single 
-       ENGINE = Buffer(default, hits_wide, 16, 10, 100, 10000, 1000000, 10000000, 100000000)
+       ENGINE = Buffer(default, hits_wide, 1, 0, 0, 10000, 10000, 0, 0)
     </create_query>
 
     <!-- Emulate writing many parts with 1000 rows, because single insert query is too fast -->